"Micron Technology has announced the availability of DDR SDRAM 32-bit DIMM modules. The 32-bit DDR DIMM opens the door to higher performance levels and greater bandwidth without sacrificing board real estate occupied by the memory sub-system. The 32-bit data bus width is common in electronic devices such as printers and set top boxes devices, whereas the standard desktop PC-based DIMM uses a 64-bit data bus. "

More here. (http://www.sharkyextreme.com/news/article.php/1547951)